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Title: Bioeconomic analysis of the environmental impact of a marine fish farm
Authors: Rabassó, Miguel
Hernández, Juan M. 
Keywords: Particulate Waste Distribution
Posidonia-Oceanica Meadows
Sea Bream
Shellfish Aquaculture
Carrying-Capacity, et al
Issue Date: 2015
Publisher: 0301-4797
Journal: Journal of Environmental Management 
Abstract: The evaluation of the environmental impact of aquaculture installations is nowadays a common social demand in many countries. The usual scientific approach to this question has been to assess the outcome from an ecological perspective, focussing on the effects produced on benthos or the water column and interactions with marine flora and fauna. In this paper, a bioeconomic model is developed to extend this traditional approach, to determine both the amount of total settled matter, its dispersion on the ocean floor and impacts on the marine ecosystem, while also taking into account other social considerations such as discounted net profits and investment returns. The model was applied to the case of off-shore gilthead seabream production in a coastal area of the Canary Isles archipelago, where the tidal current is predominant. Cage emissions and the degree of degradation of seagrass meadows on the seabed were taken as ecological impact indicators, while the net present value (NPV) for a specific time period was used as an economic indicator. By analysing the simulation results obtained by the bioeconomic model, we were able to determine the combination of production volume and harvest quantity which yields the greatest economic efficiency for different levels of degraded area. (C) 2015 Elsevier Ltd. All rights reserved.
ISSN: 0301-4797
DOI: 10.1016/j.jenvman.2015.04.034
Source: Journal of Environmental Management[ISSN 0301-4797],v. 158, p. 24-35
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